Jerserygirl thanks for that info I had no idea it was different artifical sugar in the different forms. Hmmm I drink the powdered stuff and don't notice a problem but i really don't drink a whole lot. Moderation is key to everything I think.
Atkins or not, I personally avoid things like Crystal Light. Some flavors taste decent, others do not, but overall I'm not crazy about the artificial sweetener thing. Try some water with a little lemon juice, and throw in 1/2 packet of Stevia, an all-natural sweetener.